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NASA-funded pulsed plasma rocket concept aims to send astronauts to Mars in 2 months
Admin
Today at 6:00 AM
Article Commentary
Replies
6
Views
102
Article Commentary
45 minutes ago
billslugg
Does a cosmic 'glitch' in gravity challenge Albert Einstein's greatest theory?
Admin
May 3, 2024
Article Commentary
2
3
Replies
73
Views
2K
Article Commentary
May 11, 2024
Atlan0001
A
A
From a drop of water....
Atlan0001
Apr 21, 2023
Cosmology
17
18
19
20
21
Replies
522
Views
57K
Cosmology
Yesterday at 7:01 PM
Atlan0001
A
Goodbye infinity and all that infinite singularity and infinite density descriptions
Catastrophe
May 10, 2024
Cosmology
2
Replies
32
Views
1K
Cosmology
Wednesday at 5:01 AM
Catastrophe
More on the Big Bang - what was before t = 0?
Catastrophe
Friday at 4:25 AM
Cosmology
Replies
19
Views
339
Cosmology
9 minutes ago
Helio
M
An introduction to Refractional redshift, and how it was confused with gravitational redshift
Marvas
Yesterday at 2:12 AM
Astronomy
Replies
15
Views
210
Astronomy
Yesterday at 9:25 PM
Marvas
M
Warp drives' may actually be possible someday, new study suggests
Admin
May 7, 2024
Article Commentary
2
Replies
33
Views
1K
Article Commentary
May 11, 2024
Atlan0001
A
Why a giant 'cold spot' in the cosmic microwave background has long perplexed astronomers
Admin
Today at 9:01 AM
Article Commentary
Replies
3
Views
59
Article Commentary
Today at 9:46 PM
billslugg
S
Question
How does Earth have a magnetic field when it doesn't meet the electromagnetic requirements (an iron core is insufficient)?
Space Crumpet
May 10, 2024
Cosmology
2
Replies
26
Views
909
Cosmology
Friday at 10:12 AM
arturo.v.dominguez@gmail.
Our Solar System and Life Out There
arturo.v.dominguez@gmail.
Monday at 9:37 AM
Our Solar System
Replies
22
Views
633
Our Solar System
Friday at 8:43 PM
Catastrophe
I don't see any evidence of aliens.' SpaceX's Elon Musk says Starlink satellites have never dodged UFOs
Admin
May 9, 2024
Article Commentary
2
Replies
35
Views
823
Article Commentary
Today at 6:27 PM
Cisventure Astronot
C
Equations known
space101
May 9, 2024
Astronomy
Replies
18
Views
807
Astronomy
Friday at 1:42 PM
COLGeek
Q
Is Space a Function of Tme Flow?
Questioner
Monday at 7:47 PM
Cosmology
Replies
11
Views
434
Cosmology
Yesterday at 6:29 PM
Atlan0001
A
Introduce yourself! (And show us your swag)
sward
Oct 14, 2019
Forum Feedback & Competitions
8
9
10
11
12
Replies
284
Views
121K
Forum Feedback & Competitions
Today at 4:33 AM
Catastrophe
This time, we take it from no one: Why opening the High Frontier of space can be different (op-ed)
Admin
Tuesday at 6:05 AM
Article Commentary
Replies
24
Views
346
Article Commentary
Friday at 11:28 PM
Questioner
Q
US Space Force is launching more missions than ever. Lawmakers worry America's spaceports can't keep up
Admin
Friday at 3:05 PM
Article Commentary
Replies
2
Views
141
Article Commentary
Yesterday at 4:10 PM
Unclear Engineer
U
M
Shapiro time delay is caused by Refraction. Gravitational time dilation does not exist.
Marvas
Yesterday at 5:10 AM
Astronomy
Replies
0
Views
101
Astronomy
Yesterday at 5:10 AM
Marvas
M
Star Wars: The Phantom Menace' at 25: Who are the angels on the moons of Iego?
Admin
Today at 11:05 AM
Article Commentary
Replies
0
Views
28
Article Commentary
Today at 11:05 AM
Admin
J
unusual sight in the night sky.
Jon Mayer
May 11, 2024
Astronomy
Replies
7
Views
469
Astronomy
Thursday at 9:39 AM
Jon Mayer
J
God of Destruction' asteroid Apophis will come to Earth in 2029 — and it could meet some tiny spacecraft
Admin
May 10, 2024
Article Commentary
Replies
15
Views
496
Article Commentary
Friday at 4:02 AM
Catastrophe
Question
CYCLIC UNIVERSE
Harry Costas
Sep 23, 2022
Cosmology
3
4
5
6
7
Replies
155
Views
32K
Cosmology
Apr 26, 2024
Harry Costas
Question
How to study astrophysics at home
Sage.In.Space
Wednesday at 7:36 PM
Astronomy
Replies
3
Views
212
Astronomy
Thursday at 8:42 AM
Sage.In.Space
Bright green fireball lights up the skies over Portugal and Spain (photos)
Admin
Today at 9:06 AM
Article Commentary
Replies
0
Views
29
Article Commentary
Today at 9:06 AM
Admin
In the Milky Way, 3 intruder stars are 'on the run' — in the wrong direction
Admin
Thursday at 9:05 AM
Article Commentary
Replies
5
Views
171
Article Commentary
Yesterday at 2:42 PM
Torbjorn Larsson
T
Check - the BB is 23.25 billion light-years away spatially
Gibsense
May 5, 2024
Cosmology
Replies
2
Views
698
Cosmology
May 6, 2024
Gibsense
Stunning image shows atoms transforming into quantum waves — just as Schrödinger predicted
Admin
Monday at 8:05 AM
Article Commentary
Replies
5
Views
315
Article Commentary
Tuesday at 10:12 AM
danR
Armed Astronauts?
Burbank Rob
Apr 25, 2024
Our Solar System
Replies
6
Views
1K
Our Solar System
May 4, 2024
Ken Fabian
K
Junk from a SpaceX Dragon 'trunk' may have crashed into a Canadian farmer's field (photos)
Admin
Friday at 9:05 AM
Article Commentary
Replies
4
Views
116
Article Commentary
Yesterday at 11:40 AM
Unclear Engineer
U
Why is it so hard to send humans back to the moon?
Admin
Apr 21, 2024
Article Commentary
2
Replies
30
Views
1K
Article Commentary
May 7, 2024
Atlan0001
A
Question
Condensates
Harry Costas
Apr 13, 2021
Cosmology
3
4
5
6
7
Replies
161
Views
52K
Cosmology
May 5, 2024
Harry Costas
Q
Warped Number Lines & aka 'Dark Matter'
Questioner
Friday at 5:37 PM
Cosmology
Replies
3
Views
97
Cosmology
Today at 4:52 PM
Questioner
Q
NASA's Mars sample return mission is in trouble. Could a single SLS megarocket be the answer?
Admin
Friday at 6:05 AM
Article Commentary
Replies
5
Views
113
Article Commentary
Yesterday at 8:57 AM
Torbjorn Larsson
T
S
Locked
The James Webb Telescope is like the newer iPhone upgraded to higher resolution images by the Hub.
sooth121
Apr 29, 2024
Telescopes, Star Charts, & Planetariums
Replies
5
Views
893
Telescopes, Star Charts, & Planetariums
May 3, 2024
COLGeek
Question
Re: Innovative idea for using the Earth's magnetic field to propel spacecraft
saraerdmann
Monday at 6:46 PM
Space Travel & SpaceX
Replies
3
Views
256
Space Travel & SpaceX
37 minutes ago
billslugg
There is a way to know....now!
space101
Apr 24, 2024
Cosmology
Replies
10
Views
1K
Cosmology
May 11, 2024
Gibsense
AI may be to blame for our failure to make contact with alien civilizations
Admin
Monday at 5:05 PM
Article Commentary
Replies
11
Views
246
Article Commentary
Yesterday at 11:04 PM
billslugg
NASA's Voyager 1 spacecraft finally phones home after 5 months of no contact
Admin
Apr 22, 2024
Article Commentary
Replies
13
Views
1K
Article Commentary
Apr 28, 2024
billslugg
Question
Earth Moon Origin
Harry Costas
Aug 14, 2023
Our Solar System
2
3
4
Replies
90
Views
11K
Our Solar System
Apr 30, 2024
Harry Costas
FAA to conduct new environmental review for SpaceX's Starship operations in Florida
Admin
May 10, 2024
Article Commentary
Replies
9
Views
347
Article Commentary
May 10, 2024
Unclear Engineer
U
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